Rod line coupler



Sept. 6, 1938. E. L. MCINTYRE ROD LINE COUPLER Filed April 2, 1938 5Sheets-Sheet l Inventor A iiorneys MHZ Sept. 6, 1938. E, M INTYRE2,129,067

ROD LINE COUPLER Filed April 2, 1938 5 Sheets-Sheet 2 A itorneys Sept.6, 1938.

E. MCINTYRE ,129,067

ROD LINE COUPLER Filed April 2, 1938 3 Sheets-$heet 3 Inventor Aiiorneys Patented Sept. 6, 1938 UNITED STATES PATENT OFFICE non LINECOUPLER Ernest Lee McIntyre, Sapulpa, Okla. Application April 2,1938,Serial "No. 199,696

5' Claims.

This invention relates to a safety coupling device for a power rod linefor operating a pump jack, and an object of the invention is to providea device of the character mentioned whereby the coupling may be easilyand quickly engaged by simply throwing dogs into and out of operativeposition.

The invention together with its objects and advantages will be bestunderstood from a study of the following description taken in connectionwith the accompanying drawings wher-zrin2-- Figure 1 is a sideelevational view of the coupler,

Figure 2 is a top plan view thereof,

Figure 3 is an enlarged detail sectional view through a portion of thecoupler and the knockoff post,

Figures 4, 5, and '7 are vertical sectional views taken substantially onthe lines 3-4, 55 and 1--'|, respectively, of Figure 1,

Figure 6 is a fragmentary longitudinal sectional view illustratingcertain details hereinafter more fully referred, and

Figure 8 is a fragmentary detail sectional view illustrating a slightlymodified form of the invention.

Referring to the drawings by reference numerals, it will be seen that irepresents a portionof a power rod line connected to the pump jack while2 indicates the rod that is connected to the power.

The knock-01f post is indicated by the reference numeral 4.

In accordance with the present invention the knock-off post 4 isprovided adjacent the upper end thereof with openings 5 in diametricallyopposite portions thereof. Formed integral with the post 4 is achannel-shaped guide member 6 the opposite ends of which project beyonddiametrically opposite sides of the post 4 in alignment with theopenings 5.

The guide 6 slidably accommodates a tubular coupler rod or sleeve 1.

Fitted in the power end of the rod 1 is a bar 8 that is of the samecross-sectional shape as the rod 1 and the bar 8 at one end thereof isconnected in a conventional manner and as indicated at 9 with the powerrod 2. The rod 8 is secured against movement relative to the sleeve orrod 1 through the medium of bolts I as clearly shown in Figure 3.

Slidably accommodated within the power jack end of the tubular member 1is a rod or bar II and the same at one end thereof is connected with therod line I in any suitable manner as indicated generally at i2.

For coupling the rod l l to the tubular sleeve or rod 1 so that said rodI and rod l I will reciprocate as a unit, there is provided a verticallyshiftable dog l2 that operates in a vertical guide l3 provided thereforon the member 1. The inner end of the dog I2 is adapted to engage in aselected one of a plurality of notches l4 provided therefor in the rodII as shown in Figure 6 whereby to couple rods 1 and H together.

An operating lever for the dog I2 is provided 10 and in the form of theinvention shown in Figures 1 to '7 inclusive the same comprises a pairof substantially Z or angular side bars l5 that at one end are pivotedas at Hi to the dog l2 and at an opposite end have vertical portions Hconnected by a substantially U-shaped handle l8. In the form of theinvention shown in Figure 8, the operating lever for the dog i2 isindicated by the reference numeral 15a. and is pivoted at one end to thedog [2 and at an opposite end to the bifurcated post 20. Adjacent saidpivoted end the lever ltdv is bifurcated and has pivoted within thefurcation thereof as at 3| one end of a handle 32 that is provided onits outer end with a weight 33. At the pivoted end thereof handle 32,and at the bifurcated end thereof lever lea are complementarily formedas shown to limit swinging movement of the handle 32 in one direction toa position aligning with the lever Mia. The weightequipped handle 32 maybe swung vertically upwardly into a substantially inoperative positionwhen desired.

At the angle between the portions a-b thereof the members [5 of saidlever are pivoted as at 19 to a post 20 also rising from the member i.

For releasably securing the member 3 against reciprocatory movementthere is provided a vertically shiftable dog 2! that operates in asuitable guide 22 provided therefor at one end of the channel guide 6,guide 22 being integral with the knock-off post 4 and channel guide 6 asclearly shown in Figures 3 and 4.

To cooperate with the upper end of the dog 2|, the bar 8 is providedwith a longitudinal series of relatively spaced notches 23 arranged inregistry with openings 24 provided in the underside of the member 1.Obviously with an opening 24 in alignment with guide 22 upward movementof the dog 2| will cause the dog to pass through the opening 24 and toengage a notch 23 whereby to hold the member 1 against reciprocatorymovement.

For raising and lowering the dog 21 there is provided an operating lever25 that works in suitable openings 26 provided therefor in op- 55 positesides of the knock-off post 4. Lever 25 is pivotally connected at oneend thereof to the dog 2| though the medium of a link 21 whileintermediate its en'ds lever 25 is pivoted to ears 28 formed integralwith the post 4 as at 29.

At the free end thereof the lever 25 is provided with a verticallydisposed handle 30 that straddles the member I as clearly shown inFigures 3 and 5.

As is believed to be apparent the jack is connected in the rod line whendog I2 is engaged in notch M of the rod H and the dog 2| is in therelease position shown in Figure 3.

When operation is to be discontinued, the operator pushes down on thehandle l8 thus caus ing the dog 12 to raise upwardly out of engagementwith a notch [4 while at the same time the operator pushes down on thehandle 30 causing the dog 2! to move upwardly and as an opening 24 comesinto alignment with the guide 22 to move through the opening 24 and intoengagement with a notch 23 thus arresting further movement of the"member I while the member ll, connected with the pump jack, is thenfree to reciprocate relative to the member I.

For the purposes of maintaining the member l I in well lubricatedcondition the tubular men her 1 is provided with a suitable greasefitting 3! as shown in Figure 6.

It is thought that a clear understanding of the construction, utilityand advantages of an invention of this character will be had without amore detailed description.

Having thus described the invention what is claimed as new is:-

1. In a surface rod line jack, a tubular member, means for connectingthe tubular member with a power pull rod, a rod adapted to have one endconnected to the rod line and having a second end slidably receivedwithin said tubular member, said last-named rod having the end thereofwithin said tubular member provided with a notch, a guide carried bysaid tubular member, and a dog working in said guide and having an endarranged to engage in said notch for coupling said tubular member andthe last-named rod together, said tubular member also having fixed inone end thereof a member provided with a notch, and said tubular memberbeing provided with an opening in alignment with said notch, and arelatively stationary vertically shiftable dog movable through theopening in said tubular member into and out of engagement with thelast-mentioned notch, as and for the purpose specified.

2. In a coupling device for connecting and disconnecting a power rodline, and in combination with a knock-off post, a guide member fixedlymounted on said knock-off post, a tubular member slidably fitting insaid guide member, a rod having one end fixed within said tubular memberand provided at said end with a notch, and said tubular member having anopening therein aligning with said notch, a perpendicular guide sleevemounted on said knock-off post in alignment with the opening in saidtubular member, a dog vertically slidable in said last-mentioned guideand movable upwardly through said opening and into engagement with saidnotch for securing said tubular member against reciprocatory movement, alever pivotally mounted on the knock-off post, means operativelyconnecting one end of said lever with said dog, and a handle for saidlever straddling said tubular member.

3. In a coupling device for connecting and disconnecting a power rodline, and in combination with a knock-off post, a guide member fixedlymounted on said knock-off post, a tubular member slidably fitting insaid guide member, a rod having one end fixed within said tubular memberand provided at said end with a notch, and said tubular member having anopening therein aligning with said notch, a perpendicular guide sleevemounted on said knock-01f post in alignment with the opening in saidtubular member, a dog vertically slidable in said last-mentioned guideand movable upwardly through said opening and into engagement with saidnotch for securing said tubular member against reciprocatory movement, alever pivotally mounted on the knock-off post, means operativelyconnecting one end of said lever with said dog, and a handle for saidlever straddling said tubular member, a rod having one end slidablyfitting in said tubular member and having the other end thereof adaptedto be connected to a pump jack, said last-mentioned rod being alsoprovided in the first-named end thereof with a notch, a fixed guide onsaid tubular member, a dog slidable vertically through said guide andengageable with the notch in the lastnamed rod for coupling said tubularmember and last-named rod together, and an operating lever for thelast-named dog pivotally mounted on said tubular member and having anend pivotally connected with the last-named dog.

4. In a surface rod line jack, and in combination with a knock-off post,a guide member fixedly mounted on said knock-off post, a tubular memberslidably fitting in said guide member, a rod having one end fixed insaid tubular member andprovided at said end with a longitudinal seriesof spaced notches, and said tubular member having a seriesof openingsaligning with the respective notches, a dog slidably mounted forvertical movement on the knock-off post and engageable with a selectedone of said notches for securing the tubular member againstreciprocatory movement, a second rod having an end slidably engaging insaid tubular member and provided at said end with a longitudinal seriesof notches, a guide carried by said tubular member, and a dog working insaid guide and having an end arranged to engage in a selected oneof thelast-named notches for coupling said tubular member and the lastnamedrod together.

5. In a surface rod line jack, a knock-off post provided atdiametrically opposite sides thereof with openings, and also providedwith an integral channel-shaped guide member the opposite end portionsof which extend laterally from the knock-off post in the region of saidopenings, a coupler rod having a sliding fit in said channel guide,means on the knock-01f post and on said coupler member for releasablysecuring the coupler member against longitudinal movement relative tothe guide, and means for releasing the coupler member including anoperating link pivoted intermediate its ends to said knock-oi? post, andsaid knock-off post below said guide being provided with oppositelydisposed openings through which one end portion of said operating linkextends.

ERNEST LEE MCINTYRE.

